Composition Structure and Properties of 25mm-Diameter Polycrystalline Diamond Composite

Abstract

Abstract: The composition and structure of the polished cross section of 25mm-diameter PDC were investigated by SEM,
Raman spectrum and XRD. The interface structure and the distribution of bonding phases of the polished vertical section of the PDC were analyzed by
EDW, EDX, and the properties of the combined-interface of the PDC were measured by shear, quenching and compression test. The test results show
that the 25mm-diameter PDC possesses properties as follows: transverse rapture strength σ_b 1160MPa; heat-resistance temperature
742℃; bonding strength τ2.67GPa; average wear-resistance Q 12.3×10⁴ with only 19.2% decrease from the peripheral point to the central point.

Key words: polycrystalline diamond, composite, sintering

CLC Number:

TB33

DENG Fu-Ming,LI Wen-Zu. Composition Structure and Properties of 25mm-Diameter Polycrystalline Diamond Composite[J]. Journal of Inorganic Materials.

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Composition Structure and Properties of 25mm-Diameter Polycrystalline Diamond Composite

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